Current intrusion detection systems have a narrow scope. They target flow aggregates, reconstructed TCP streams, individual packets or application-level data fields, but no existing solution is capable of handling all of the above. Moreover, most systems that perform payload inspection on entire TCP streams are unable to handle gigabit link rates. We argue that network-based intrusion detection...

For interactive video storage applications that retrieve video data over low bit-rate networks, precoded bit-streams have to be transmitted to the receiver with low latency. Besides random access, fast forward and reverse, the scalability of the bit-stream is an important requirement for the above application. In this paper , we investigate a standard compatible approach that avoids the overhea...

Analyzing information is recently becoming much more important than ever, as it is produced massively in every area. In the past years, data streams became more and more important and so were algorithms that can mine hidden patterns out of those non static data bases. Those algorithms can also be used to simulate processes and to find important information step by step. The translation of an En...

Introduction: Emergency Department (ED) records and over-the-counter (OTC) sales data are two of the most commonly used data sources for syndromic surveillance. Most current detection algorithms monitor these data sources separately, and either do not combine them, or combine them in an ad hoc fashion. This paper introduces a causal model that coherently combines the two data sources in order t...

In multicast applications such as video conference which consist of multiple streams, not all streams are of equal interest to all receivers. In this case we believe that this disparity in receiver interest should be reflected in the rate adaptation. This paper presents collaborative rate management architecture, named CRM, for layered multicast streams. CRM estimates shared bottleneck links am...

Online news has become increasingly prevalent as it helps the public access timely information conveniently. Meanwhile, the rapid proliferation of Web 2.0 applications has enabled the public to freely express opinions and comments over news (user-generated content, or UGC for short), making the current Web a highly interactive platform. Generally, a particular event often brings forth two corre...

Processing and querying streams, XML streams in particular, has recently become a widely recognized area of interest both in research and in industry. In contrast to traditional query evaluation for databases, where multiple queries against the same data can be evaluated sequentially, for a streamed environment only the simultaneous execution of multiple queries is feasible, as the sequential e...

Query processing for data streams should be continuous and rapid, which requires strict time constraint. In most previous researches, in order to guarantee this constraint, the evaluation order of join predicates in a continuous query is optimized by a greedy. However, the greedy strategy traces only the first promising plan, so that it often finds a sub-optimal plan. This paper proposes an imp...

Given m groups of streams which consist of n1, . . . , nm coevolving streams in each group, we want to: (i) incrementally find local patterns within a single group, (ii) efficiently obtain global patterns across groups, and more importantly, (iii) efficiently do that in real time while limiting shared information across groups. In this paper, we present a distributed, hierarchical algorithm add...